Portable rolling tool



May 2, 1961 O. R. BONNER PORTABLE ROLLING TOOL Filed Jan. 5, 1956 2 Sheets-Sheet 1 I N VEN TOR.

May 2,'1961 O BONNER 2,982,331

PORTABLE ROLLING TOOL INVENTOR. OPV/ZE 50AM/f@ i lgenerallytat 9 and comprises a United*` States Patent 2,982,331 PORTABLE ROLLING Toon Orville Richard Bonner, Bellevue, Ky., assigner tovGeneral Electric Company, a `corporation of New York Filed Jan. 5, 1956, ser. No. 557,581 z Claims. (ci. 153-29) This invention relates to rolling tools and, more particularly, to a rolling tool lfor aring or expanding the edge of a cone, band, cylinder or other sheet metal obdesired to join the cone, band or cylinder to an adjoining or mating part by voverlapping the edge and subse-v quently welding'or joining the edges in some other suitable mannen The present methods of forming Vsuch a flare or enlargement require the use of largeand cumbersome machines which are vusually designed to form a flare Y or enlargement only of a single size.-

One object of this invention 1s to provide an improved portable rolling tool for forming ares and enlargements Y on sheet metal parts.-

Another object of this invention is to provide a lighti weight .and portable hand rolling tool capable of being conveniently carried Vfrom one job to the next.

i Another` object of the invention is toprovide a rolling tool for forming ilares and enlargements which has replaceable and changeable rollers so that various sizes and types otV ilaresand enlargements may be formed. The objects of my inventionl may be realized through the provision of a tool Vcomprising a frame and having a sizing roller mounted for rotation in the frame including means for driving Vthe sizing roller. A clamping roller and a bevel roller are adjustably mountedin the frame and act ih cooperationrwiththe -sizing roller to hold the work piece and form the bevel, flare or enlargement on the edge of the work piece while the rollers are being rotated. A pair of locating rolls are. pivotally mounted on opposite sides of the frame in order to limit the engagement of the work piece between theother rollers,

My invention will be better understood Afrom the following description taken in connection with the accom- .paying drawings and its scope Will beV pointed out in the `appended claims. 'l

In the draWings,'F1

f. tionio'fqthe tooljQand Figure 4 isa top view of the-'tool vtaken along thellines 14-4 of Figure'..

Referring 'rstto `'Figures l and2, the tool is shown a-sizing'roller 11 rotatably mountedfin the frame ltlby a suitable shaft 14 mounted in bearings contained in the, Viraine lil'. The sizing rollerll is comprised'otastraight portion`12 which mayfbe kiiurled "and Va smooth'bevel j portion 13. The shaftrl hasgthe bevel gear16 attached i to it` at .its upper end ,Ihe'bev'el 'gear 16 is drivingly g fengaged with thefbevelgear 18; shaft l29.isjconnected 1il`for rotation therein. A liand ycrank 2 2.is connected`4 l 4to the shaft vZtl for thepurposefof-rotatingthesliait 2) A gore-'l vis "a front elevation, partly in. section,` ofthe tool; Figurey 2 is 't1-fragmentary viewv of thev t. rollers and drive means therefor; Figure' 3is Va side' eleva- Vmounted at the outer ends ofthe arms V54.

, 2,982,231V Patented May 2,1961

ice

and thereby'driving the sizing roller 11 through the bevel gears v16 and 18.

The frame 10 is provided with the slots k24 and 216. A pair of adjustable slides 28 and 30 are slideably mounted in the slots 24 and' 26, respectively, for movement toward and away from the sizing roller 11-. A bevel roller 32 is rotatably mounted at one end of the adjustable slide 28.` A clamping roller 34 is rotatably mounted at one end of the adjustable slide 3l). The adjustable slides 28 and 30 are kept within the frame 10 by means of the cover plates 36 best shown in f Figure 4. The cover plates 36 may be secured to the frame10 byl means of the screws 38. An adjusting screw v40 isthreadingly engaged in the frame `10 in order to move the adjustable slide 30 laterally within the slot 26. An adjusting screw 42 is threadingly engaged in the frame 10 in order to motivate the adjustable slide 28. A handle'44 may be provided to engage the adjustable screw 42 and thereby increase the amount of force thatmay be exerted on the adjustable slide-28 as will be appreciated byrthose skilled in the art.

A suitable handle 46 may be provided at the top portion of the tool in order to make the tool adaptable for convenient handling. =The handle 46 may besecured by means of the screw 48. A pair of brackets 50 are mounted on either side of the upper portion of the tool as will be betterV seen by referring to Figure 3. The brackets 5t) may be secured by means of the screws v52,. The purpose of the brackets 50 will hereinafterbecome readily apparent. I

A pair of arms 54 are pivoted to the brackets 50 by Y means of` the pivot pins 56. Thearms 54 are each provvided with avclevis 5S. The clevisesvS are provided with the pivot screws 60 and 62. The pivot screws 60 and 62 are free to rotate in the clevises 58. j The pivot vscrew 60 is provided with aV right hand threadV and the pivot screw 6.2 is provided with a left hand thread. An

adjusting screw 64 having al right hand thread where it engages the pivotV screw 60 and a left hand thread where it'engages the pivot screw 62'is provided connecting the pivoted arms 54. As will be apparent to those skilled in the art, this mechanism will result in vequal raising andV lowering'of the arms 54 by means Vof turning the adjusting screw 64. The locating rolls 66 are` rotatably `In operation, the work piece 68 which may be the edge of a cone, band, cylinder or other sheet metal object, is placed in the position shown in Figure l. This may be done. by moving vthe bevel roller 32 and the clamping roller 34 away from the sizing roller 11 thus opening the gap between the rollers. Movement of the bevel rollerY 32. and the clamping roller 34 may beaccomplished by rotation of the adjusting screws 40 and 42. The posiframe or body 10, and

tion( of the work piece 68 longitudinally with respect to thev sizing roller 11 is controlled by the positionV of the locating rolls 66.

As previously described, the locating rolls 66 are controlled by the adjusting screw 64." a'l'hus in setting up the tool for operation, the v'adjusting screw 64 is turned to the position giving the desired width of ilare or enlargement of thework piece 68. :Turning the adjusting screw 64will move the position of the work-piece 68 with refspect to the smoothbevelportion 13 ofthe sizing roller held against the work piece'withsutiicient forcerso'" ,l

11. The locating rolls 66 rest against the edge 70 of the workpiece eS. When the tool is in operation the locating ing thefadjusting screw 40.'l The` clamping roller 34 is 3 that when the sizing roller 11 is rotated, the knurled straight portion 12 of the sizing roller `11 will have suflicient frictional force generated between its surface and the work piece 68 to move the entire to'ol along the edge of the Work piece 68.

The bevel roller 32.is next moved into engagement with the edge portion of the work piece 68 by means of rotataing the adjusting screw, 42. As seen in Figure 2, the bevel roller 32 is moved into engagement until'the edge portion of the work piece 68 is held against the smooth bevel portion 13 of the sizing roller 11.

Upon making all of the above adjustments, the entire edge of the work piece 68 may then be ared or enlarged by merely turning the hand crank 22 thereby moving the entire tool about the edge of the work' piece 68 thereby providing a uniform flared or enlarged edge portion of the work piece 68.

As will be evident to those skilled in the art, the width of `the bevel or enlarged portion may be varied by adjusting the position of the locating rolls 66 by means of the adjusting screw 64. In this manner the width of the work piece 68 which is in engagement with the smooth bevel portion 13 of the sizing roller 11 may be varied. v

One of the advantages of my tool is that the angular displacement of the bevel or enlarged portion of the work piece 68 may be varied by the simple expedient of replacing the sizing roller 11 with another sizing roller having a smooth bevel portion 13 of a different included angle. `It would, of course, also be necessary to change the bevel roller 32 so that it has a tapered surface which is parallel to the surface of the smooth bevel portion 13 of the sizing roller 11. Thus, it will be apparent that various bevels or enlargements may be made by merely having alternate pairs of sizing rollers 11 and bevel rollers 32 available.

While particular embodiments of the inventionhave been illustrated and described, it will be obvious to those skilled in the art that various changes and modifications may be made without departing from the invention and it is intended to cover in the appended claims all such changes and modifications that corne within the true spirit and scope of the invention.

What I claim as new and desire to secure by Letters Patent of the United States is: l

1. A portable tool for hanging a sheet metal workpiece comprising, in combination; a frame; a sizing roller having a cylindrical portion and a smooth conical portion coaxial with said cylindrical portion, said sizing roller being mounted for rotation about its axis in said frame; rotary drive means connected to rotate said sizing roller to move the tool relative to the workpiece; a clamping roller mounted in said frame for rotation about an axis substantially parallel to that of said sizing roller; adjusting means for linear movement of said clamping roller in a generally radial direction with respect to the axis of the sizing roller and into proximity therewith for clamping a workpiece therebetween; a bevel roller mounted in said framefor rotation about an axis disposed at a small angle with respect to the sizing and clamping roller axes; adjusting means for linear movement of said bevel roller at an oblique angle with respect to the sizing and clamping roller axes and into proximity with said sizing roller conical portion so as to form the workpiece therebetween; a pair of locating members mounted to said frame adjacent said sizing roller conical portion and spaced along a line which lies between and substantially normal to the axes of said sizing and clamping rollers and also lies substantially normal to a line intersecting both said axes; and adjusting means for movement of said locating members axially of said sizing roller so as tocontrol the depth of insertion of the workpiece between the bevel and sizing rollers.

2. A portable sheet metal anging tool as defined in claim 1 wherein each of said locating members is carried by an arm pivoted to said frame, and said locating member adjusting means comprises a threaded element interconnecting said pivoted arms and providing simultaneous and equal adjustment thereof.

References Cited in the le of this patent UNITED STATES PATENTS 74,481 Armstrong Feb. 18, 1868 738,428 Gabriel Sept. 8, 1903 766,877 Dewes Aug. 9, 1904 1,669,957 Wagner May 15, 1928 1,753,963 Mauser Apr. 8, 1930 1,965,533 Lyon July 3, 1934 2,364,735 McGlone et al. Dec. 12, 1944 2,479,200 Birks Aug. 16, 1949 2,498,686 Johnson Feb. 28, 1950 2,740,451 Knost Apr. 3, 1956 FOREIGN PATENTS 515,299 Belgium Nov. 29, 1952 749,721 Germany Dec. 2, 1944 

